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c.1200, eken "to increase, lengthen," north England and E. Midlands variant of echen from Old English ecan, eacan, eacian "to increase," probably from eaca "an increase," from Proto-Germanic *aukan (cf. Old Norse auka, Old Frisian aka, Old High German ouhhon, Gothic aukan), from PIE *aug- "to increase" (see augment).
Now mainly in phrase to eke out (1590s). It means "to make something go further or last longer;" you can eke out your income by taking a second job, but you can't eke out your existence. Related: Eked; eking.
"also" (obsolete), from Old English eac, cognate with Old Saxon, Old Dutch ok, Old Norse and Gothic auk, Old Frisian ak, Old High German ouh, German auch "also;" probably related to eke (v.).